@hingehead,
If the cost of driving your own car is going to skyrocket, then that will also impact the market for vintage and classic cars, so if you own one, sell it now while there's still a market for them...
Semi-annual styling changes in our current vehicles is a huge cost driver and profit generator... People want to be seen in the latest and greatest cars... As we take the driving experience away, owners' attachment to their vehicle will be one giant step removed, and exterior styling will become far less important except in the high-status end. Interior comfort and styling will still matter, but if you're using ride-shares all the time, will you really care much about the styling? Remember 'Checker' cabs.
Similarly, there will be less need for differentiation in powertrains. No one will care if you have a supercharged, direct-injected, 4-valve, V8 with VVT and dual overhead ‘carambas!’ Fewer engine choices means fewer development engineers will be needed... All that will matter will be reliability, production cost, fuel economy and emissions, and engines will gravitate toward common designs -nothing exotic unless the powers-that-be grant special waivers for a class of faster cars - no doubt exclusively for government use!
As computers take over more of the driving chores, they can be programmed to operate vehicles in a manner that causes the least wear and tear on the vehicle (gentler turns, shifting at lower revs, anticipating slow-downs for easier braking, avoiding pot-holes, etc) - meaning tires will last longer, engines and suspensions will need less maintenance, etc - which will have another big impact on the labor economy for automotive maintenance...
Maintenance intervals will become regular and predictable such that the engine, brakes, shocks, etc will be designed to all reach the end of their useful life at the same time - & then the entire 'powertrain module' can be robotically swapped/recycled with just a few bolts, and an electrical connector – since bodies will outlast powertrains that are in constant service.
Will motorcycles still be under human control or will those also become a hand's-off computer-driven experience to reduce fuel consumption and increase traffic density?